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Mathematical Treasure: Adrian Vlacq’s Trigonometric Tables

Author(s):

Frank J. Swetz (The Pennsylvania State University)

In 1636, Adriaan Vlacq published a shortened version of trigonometric tables he had constructed in 1633, with the new title Tabulae sinuum, tangentium et secantium. . . . This table of trigonometric function values also contained logarithms for some of these functions. Here is the title page of a 1663 German edition of this work.

The author also provided examples of how to apply his table of values.

The images above are presented courtesy of the University of Pennsylvania Libraries.